The periodic table of elements
What is the atomic number of Calciuum
20
what are alkali metals reactive to?
water
what year was the bohr model described?
1913
whats the first point of the KMT
All matter is made up of small particles
when was the dalton model described
early 1800s
what is the atomic mass of potassium
39.1
true or false. halogens are very reactive non metals
true
what model did the bohr model improve from.
Rutherford model
what change of state is melting
solid to liquid
what was the main thing the rutherford model introduce
a nucleus
what is the symbol for silver
Ag
how many valence electrons do Alkaline metals have (spell out the number)
two
what did this model improve on from the rutherford model
electron orbits
what temperature does water need to be to freeze (type the word degrees)
0 degrees celsuis. 32 degrees fahrenheit
what were two new terms the thomson model introduced
atom,electron,plum,pudding
whats the ion charge of Thorium
4+
what is the name of the elements in group 18
whats the order of electrons in a bohr model
2-8-8-18
what occurs when you add or remove heat from something
thermal expansion
what experiment introduced a nucleus
gold foil experiment
whats the atomic mass Ununquadium
289
what are three noble gasses
xenon, krypton, argon
this element has 19 electrons, what element is it and how is it arranged?
potassium, 2-8-8-1
what is the point when liquid turns to gas
boiling point
what scientists were connected to the rutherford model
JJ thomson, Ernest marsden